USE PLC LOGIC

You are to program a 4-way stoplight at an intersection of a major highway and a smaller side-road. The main highway runs north and south. The side road runs east and west. In each direction there are 8 sensors as indicated on the diagram below. You are to program your light so that: If no cars are passing through the intersection, EW lights are red and NS are green. .When a NS left-hand turn lane sensor is made, then the NS lights go yellow (10seconds) and then NS lights go red and NS green arrow. It remains green for either a maximum of 60 seconds or 20 seconds after the sensor has cleared .When a EW straight sensor is made for at least continuous 5 seconds, then NS lights go yellow (10 seconds) and then red. All lights are red for 2 seconds. Then EW lights turn green. It remains green for either a maximum of 60 seconds or 20 seconds after the sensor has cleared. When a EW left-hand turn lane sensor is made, then the NS lights go yellow (10seconds) and then EW lights go red and EW green arrow. It remains green for either a maximum of 60 seconds or 20 seconds after the sensor has cleared. . .After the max 60 seconds or 20 seconds after the sensor has cleared, the appropriate lights will turn yellow (10seconds) and then the system will return to EW lights are red and NS are green. Any time a light turns red, there is a 2 second period where all lights are red. 00